216976 has 20 divisors (see below), whose sum is σ = 428544. Its totient is φ = 106400.

The previous prime is 216973. The next prime is 216991. The reversal of 216976 is 679612.

216976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041 + ... + 1231.

2²¹⁶⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

216976 is a deficient number, since it is larger than the sum of its proper divisors (211568).

216976 is a wasteful number, since it uses less digits than its factorization.

216976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 264 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 216976 is about 465.8068269143. The cubic root of 216976 is about 60.0902345976.

The spelling of 216976 in words is "two hundred sixteen thousand, nine hundred seventy-six".